Question

2t²+ t-36 =0 resolver
pra mim​

Answer 1

Resposta:

S={( 4 , -9/2)}

Explicação passo-a-passo:

2t²+t-36=0

a=2 b=1 c=-36

∆=b²-4.a.c

∆=(1)²-4.(2).(-36)

∆=1+288

∆=289

t'=[-(+1)+√289]/2.(2)

t'=[-1+17]/4

t'=16/4

t'=4

t"=[-(+1)-√289]/2.(2)

t"=[-1-17]/4

t"=-18/4

t"=[-18÷2]/[4÷2] = -9/2